Bring water and quinoa to a boil in a saucepan. Reduce heat to medium-low, cover, and simmer until quinoa is tender, 15 to 20 minutes. Remove from heat, fluff using a fork, and allow to cool, about 1 hour.
Combine cooled quinoa, apple, bell pepper, and cranberries in a large mixing bowl.
Combine olive oil, vinegar, lemon juice, salt, black pepper, and Dijon mustard in a small bowl and whisk together. Pour vinaigrette over quinoa mixture and toss until all ingredients are coated.
Add chopped kale to the bowl with the quinoa mixture and toss in before serving.
